ASTM D2915-02

Standard Practice for Evaluating Allowable Properties for Grades of Structural Lumber

SCOPE
1.1 This practice covers sampling and analysis procedures for the investigation of specified populations of stress-graded structural lumber. Depending on the interest of the user, the population from which samples are taken may range from the lumber from a specific mill to all the lumber produced in a particular grade from a particular geographic area, during some specified interval of time. This practice generally assumes that the population is sufficiently large so that, for sampling purposes, it may be considered infinite. Where this assumption is inadequate, that is, the population is assumed finite, many of the provisions of this practice may be employed but the sampling and analysis procedure must be designed to reflect a finite population. The statistical techniques embodied in this practice provide procedures to summarize data so that logical judgments can be made. This practice does not specify the action to be taken after the results have been analyzed. The action to be taken depends on the particular requirements of the user of the product.
1.2 The values stated in inch-pound units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Nov-2002
• ICS: 79.040 - Wood, sawlogs and sawn timber
• Technical Committee: D07 - Wood
• Drafting Committee: D07.02 - Lumber and Engineered Wood Products

Relations

• Replaces: ASTM D2915-98e1 - Standard Practice for Evaluating Allowable Properties for Grades of Structural Lumber
• Effective Date: 10-Nov-2002
• Replaced By: ASTM D2915-03 - Standard Practice for Evaluating Allowable Properties for Grades of Structural Lumber
• Effective Date: 10-Apr-2003
• Referred By: ASTM D198-22a - Standard Test Methods of Static Tests of Lumber in Structural Sizes
• Effective Date: 10-Nov-2002
• Referred By: ASTM D5055-19e1 - Standard Specification for Establishing and Monitoring Structural Capacities of Prefabricated Wood I-Joists
• Effective Date: 10-Nov-2002
• Referred By: ASTM D6815-22a - Standard Specification for Evaluation of Duration of Load and Creep Effects of Wood and Wood-Based Products
• Effective Date: 10-Nov-2002
• Referred By: ASTM D5574-94(2021) - Standard Test Methods for Establishing Allowable Mechanical Properties of Wood-Bonding Adhesives for Design of Structural Joints
• Effective Date: 10-Nov-2002
• Referred By: ASTM D7032-21 - Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite and Plastic Lumber Deck Boards, Stair Treads, Guards, and Handrails
• Effective Date: 10-Nov-2002
• Referred By: ASTM D6874-22a - Standard Test Methods for Nondestructive Evaluation of the Stiffness of Wood and Wood-Based Materials Using Transverse Vibration or Stress Wave Propagation
• Effective Date: 10-Nov-2002
• Referred By: ASTM D7672-19 - Standard Specification for Evaluating Structural Capacities of Rim Board Products and Assemblies
• Effective Date: 10-Nov-2002
• Referred By: ASTM D2555-17a - Standard Practice for Establishing Clear Wood Strength Values
• Effective Date: 10-Nov-2002
• Referred By: ASTM D8391-22e1 - Standard Specification for Demonstrating Equivalent Fire Performance for Wood-Based Floor Framing Members to Unprotected 2 by 10 Dimension Lumber or Equal-Sized Structural Composite Lumber
• Effective Date: 10-Nov-2002
• Referred By: ASTM D7033-22 - Standard Practice for Establishing Design Capacities for Oriented Strand Board (OSB) Wood-Based Structural-Use Panels
• Effective Date: 10-Nov-2002
• Referred By: ASTM D5516-18 - Standard Test Method for Evaluating the Flexural Properties of Fire-Retardant Treated Softwood Plywood Exposed to Elevated Temperatures
• Effective Date: 10-Nov-2002
• Referred By: ASTM D6570-18a(2023)e1 - Standard Practice for Assigning Allowable Properties for Mechanically Graded Lumber
• Effective Date: 10-Nov-2002
• Referred By: ASTM D3737-18e1 - Standard Practice for Establishing Allowable Properties for Structural Glued Laminated Timber (Glulam)
• Effective Date: 10-Nov-2002

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 2915 – 02
Standard Practice for
Evaluating Allowable Properties for Grades of Structural
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Lumber
This standard is issued under the fixed designation D 2915; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
The mechanical properties of structural lumber depend upon natural growth characteristics and
manufacturing practices. Several procedures can be used to sort lumber into property classes or stress
grades, the most widely used being the visual methods outlined in Practice D 245. With each, a
modulus of elasticity and a set of from one to five allowable stresses may be associated with each
stress grade. The allowable stresses are extreme fiber stress in bending, tension parallel to the grain,
compression parallel to the grain, shear, and compression perpendicular to the grain. This test method
for evaluation of the properties of structural lumber defines an allowable property as the value of the
property that would normally be published with the grade description.
This practice is useful in assessing the appropriateness of the assigned properties and for checking
the effectiveness of grading procedures.
For situations where a manufactured product is sampled repeatedly or lot sizes are small, alternative
2
test methods as described in Ref (1) may be more applicable.
1. Scope 1.2 The values stated in inch-pound units are to be regarded
as the standard.
1.1 This practice covers sampling and analysis procedures
1.3 This standard does not purport to address all of the
for the investigation of specified populations of stress-graded
safety concerns, if any, associated with its use. It is the
structural lumber. Depending on the interest of the user, the
responsibility of the user of this standard to establish appro-
population from which samples are taken may range from the
priate safety and health practices and determine the applica-
lumber from a specific mill to all the lumber produced in a
bility of regulatory limitations prior to use.
particular grade from a particular geographic area, during some
specified interval of time. This practice generally assumes that
2. Referenced Documents
the population is sufficiently large so that, for sampling
2.1 ASTM Standards:
purposes, it may be considered infinite. Where this assumption
D 198 Test Methods of Static Tests of Timber in Structural
is inadequate, that is, the population is assumed finite, many of
3
Sizes
the provisions of this practice may be employed but the
D 245 Practice for Establishing Structural Grades and Re-
sampling and analysis procedure must be designed to reflect a
3
lated Allowable Properties for Visually Graded Lumber
finite population. The statistical techniques embodied in this
4
E 105 Practice for Probability Sampling of Materials
practice provide procedures to summarize data so that logical
judgments can be made. This practice does not specify the
3. Statistical Methodology
action to be taken after the results have been analyzed. The
3.1 Two general analysis procedures are described under
action to be taken depends on the particular requirements of the
this practice, parametric and nonparametric. The parametric
user of the product.
approach assumes a known distribution of the underlying
population, an assumption which, if incorrect, may lead to
1
This practice is under the jurisdiction of ASTM Committee D07 on Wood and inaccurate results. Therefore, if a parametric approach is used,
is the direct responsibility of Subcommittee D07.02 on Lumber and Engineered
appropriate statistical tests shall be employed to substantiate
Wood Products.
this choice along with measures of test adequacy (2, 3, 4, 5, 6,
Current edition approved Nov. 10, 2002. Published January 2003. Originally
approved in 1970 as D 2915 – 70 T. Last previous edition approved in 1998 as
D 2915 – 98.
2 3
The boldface numbers in parentheses refer to the list of references at the end of Annual Book of ASTM Standards, Vol 04.10.
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this practice. Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D2915–02
7). Alternatively a nonparametric approach requires fewer grain stress for the grade are estimated. For the four other
assumptions, and is generally more conservative than a para- allowable stresses, a near-minimum propert
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